wannacry | c2d97f5bd1d30f542e60f21131f0493d27cfc10a444bc40327e72888f4637ca3

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
16/05/2024, 13:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
4b52472d77d4ad463b839822070b38aa_JaffaCakes118.dll
Size 5.0MB
Sample240516-qtcgrafd95
SHA256 c2d97f5bd1d30f542e60f21131f0493d27cfc10a444bc40327e72888f4637ca3
MD5 4b52472d77d4ad463b839822070b38aa
SHA1 16c2dc68b60249b58efc629b4a7bb81fe3061613
SHA512 6be993a898fc00f5d7e4dc8da19810acddb8f916f1430140e10a1eda988ec692f489e092c739fd43a1afed6ad0e84ea0f2e1520e02378f2a0ba41efff479a505
SSDEEP 98304:+DqboBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2H:+Dqbe1Cxcxk3ZAEUadzR8yc4H
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

wannacry discovery ransomware worm

Malware Config

Signatures

Wannacry
WannaCry is a ransomware cryptoworm.
ransomware worm wannacry
Contacts a large (3202) amount of remote hosts 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Executes dropped EXE 3 IoCs

pid	Process
1664	mssecsvc.exe
1332	mssecsvc.exe
996	tasksche.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\WINDOWS\mssecsvc.exe	rundll32.exe
File created	C:\WINDOWS\tasksche.exe	mssecsvc.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	mssecsvc.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	mssecsvc.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	mssecsvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 2680	2536	rundll32.exe	82
PID 2536 wrote to memory of 2680	2536	rundll32.exe	82
PID 2536 wrote to memory of 2680	2536	rundll32.exe	82
PID 2680 wrote to memory of 1664	2680	rundll32.exe	83
PID 2680 wrote to memory of 1664	2680	rundll32.exe	83
PID 2680 wrote to memory of 1664	2680	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4b52472d77d4ad463b839822070b38aa_JaffaCakes118.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4b52472d77d4ad463b839822070b38aa_JaffaCakes118.dll,#1
  2⤵
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2680
- - C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Windows directory
    PID:1664
  - - C:\WINDOWS\tasksche.exe
      C:\WINDOWS\tasksche.exe /i
      4⤵
      Executes dropped EXE
      PID:996

C:\WINDOWS\mssecsvc.exe
C:\WINDOWS\mssecsvc.exe -m security
1⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
PID:1332

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

mssecsvc.exe

Path C:\Windows\mssecsvc.exe
Size 3.6MB
SHA256 92d10262215766226bcd5e0c61de7382cbf9ede5d9cd410377a0581f8eb33f6d
MD5 c878119680a9169e2ea61d41bf1b074c
SHA1 f8a1e115e474b76342378dfc5ffb36fab536efbd
SHA512 4eeaf962ea3d8de5477d3cd64546ebd1990ba711973cd0c1abf74f667c03cd326371c3a74d7b5e3ff19e99fb6e502a9a147485f2a028715b129885b998e4005e
SSDEEP 98304:yDqboBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2HI:yDqbe1Cxcxk3ZAEUadzR8yc4HI
MD5 SHA1 SHA512 SSDEEP

Submit Download

tasksche.exe

Path C:\Windows\tasksche.exe
Size 3.4MB
SHA256 e7e4c996e49d2385e381df0aa4c17084e16cdf7b95ed4192a01b0ad18d1aadb8
MD5 9ecb24cd08a2154dacd66d57998bc6e7
SHA1 bd0512f53db8a5e9520851b51ce7c6a70895264d
SHA512 9216c53bcad2f1d53e4351029dd05c610fa0fe2bc493f4a37af8675262b69af1eb53990409e3204bbcc2ee4fd66121e3626e52cd83d13603e3d9524fb384aee1
SSDEEP 98304:QqboBhz1aRxcSUDk36SAEdhvxWa9P593R8yAVp2Hj:Qqbe1Cxcxk3ZAEUadzR8yc4Hj
MD5 SHA1 SHA512 SSDEEP